Removed unused class member and updated comment

Author: kmvanbrunt

cmd2/pyscript_bridge.py

@@ -62,11 +62,9 @@ def __bool__(self) -> bool:
 
 
 class PyscriptBridge(object):
-    """Preserves the legacy 'cmd' interface for pyscript while also providing a new python API wrapper for
-    application commands."""
+    """Provides a Python API wrapper for application commands."""
     def __init__(self, cmd2_app):
         self._cmd2_app = cmd2_app
-        self._last_result = None
         self.cmd_echo = False
 
     def __dir__(self):